Dextrins are yellowish-brown or white powders, and are a group of low molecular weight carbohydrates produced by the hydrolysis of starch. Dextrins are a mixture of polymerized glucose units. Dextrins can be produced from starch using an enzyme such as amylase, as occurs during digestion in the human body, and also produced using dry heat using acid and is called the roasting process. The latter method is used industrially and also occurs on the surface of bread during the baking process, which contributes to the taste, color and crunchiness. Dextrins produced by thermal methods are known as pyrodextrins, as starch is decomposed during roasting under acidic conditions and produces short starch chains that undergo partial re-branching where α-(1,6) bonds are created between them and the hydrolyzed starch molecule. Dextrins are white, yellow or brown powders and are either partially or completely soluble in water and give optically active solutions with low viscosity. Most of them can be detected by iodine solution, which gives a red colour, which distinguishes erythrodextrin (a red-coloured dextrin) from achromodextrin, which gives no colour. White or yellow dextrins produced from starch by roasting with little or no acid are called gum arabic dextrins containing α-(1→4) and α-(1→6) glycosidic bonds.
Uses:
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Yellow dextrins are used as water-soluble adhesives, in the manufacture of envelope tabs that are wetted before closing, in paper tubes, in mining as an additive in foam flotation, in the casting industry as a green power additive and an ink thickener in dyeing. White dextrins are as follows:
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Freshness enhancer in food processing, food mixtures, coatings and polishing
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Fabric finishing agent and coating agent to increase the weight and stiffness of fabrics.
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Binding and thickening agent in the pharmaceutical and paper coating industries.
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A fuel and binding agent in pyrotechnics, they are added to fireworks to harden them into granules. Dextrins are less digestible than starch due to re-branching. Indigestible dextrins have been developed as soluble fiber supplements used alone and as additives to processed food products.
Dextrin can be manufactured using economical chemical raw materials that are easily available locally and globally. Therefore, to manufacture this product, it is necessary to obtain its formula from the website, as manufacturing this product does not require great capabilities and complications. We advise beginners in small and medium projects related to this field to buy the formula from the website.
